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- W2374111597 abstract "Gas migration and discharge in compact coal seams are strongly related to coal body damage and cracks formation.Coal body cracks formation conduces to gas migration in low permeability coal bed.The coal body extraction damage experiments under different kinds of solvents were done,the porosity changes of coal body residues extracted by different solvents were determined.The effects of different kinds of solvents on coal body damages were considerably different.A large amount of cracks were formed after N-methyl-2-pyrrole(NMP)extraction.Furthermore,the better effects on coal body damages and the visible coal body swelling were achieved by applying the mixture of NMP and carbon bisulphide.This solvents combination showed a good synergistic effect other than single solvent.The porosity of coal residues extracted by NMP and NMP with carbon bisulphide mixed solvent was approximately 4 times and 5 times of the raw coal body,respectively.The coal body porosity increased dramatically by solvent extraction.The analysis of the extract and extracted residue by means of FTIR and TG techniques indicated that the aliphatics in extracted coal residue decreased dramatically after solvent extraction compared with raw coal body." @default.
- W2374111597 created "2016-06-24" @default.
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- W2374111597 date "2012-01-01" @default.
- W2374111597 modified "2023-09-27" @default.
- W2374111597 title "Experimental Research on Solvent Extraction Damage and Cracks Formation of Coal Body" @default.
- W2374111597 hasPublicationYear "2012" @default.
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